barrel_file_for_flutter.pdf

by ashdik

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FlutterͷBarrel Fileʹ ͍ͭͯ 2023/07/24 Daiki Asahi (ashdik) 1

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ே೔େथˏ 5XJUUFSɿ!EBJLJ 'MVUUFSྺɿϲ݄ ϒϩάɿIUUQTCMPHEBMUNF

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໨࣍ ɾBarrel Fileͱ͸ʁ ɾimport͸ॏཁͳͷ͔ʁ ɾexportΩʔϫʔυ ɾBarrel Fileͷ࡞Γํ 3

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໨࣍ ɾBarrel Fileͱ͸ʁ ɾimport͸ॏཁͳͷ͔ʁ ɾexportΩʔϫʔυ ɾBarrel Fileͷ࡞Γํ 4

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Barrel Fileͱ͸ʁ 5 importΛ·ͱΊͨϑΝΠϧ 5

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໨࣍ ɾBarrel Fileͱ͸ʁ ɾimport͸ॏཁͳͷ͔ʁ ɾexportΩʔϫʔυ ɾBarrel Fileͷ࡞Γํ 6

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7 importจͷॏཁੑ ͲͷϑΥϧμʹґଘ͍ͯ͠Δ͔ʁ 7

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υϝΠϯ ͲͷυϝΠϯ͕ͲͷυϝΠϯΛ஌͍ͬͯΔ͔ ϨΠϠʔ ٯࢀর͸ආ͚ͯɺґଘؔ܎ΛҰํ޲ʹ 8 importจͷॏཁੑ ͲͷϑΥϧμʹґଘ͍ͯ͠Δ͔ʁ 8

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υϝΠϯ ͲͷυϝΠϯ͕ͲͷυϝΠϯΛ஌͍ͬͯΔ͔ ϨΠϠʔ ٯࢀর͸ආ͚ͯɺґଘؔ܎ΛҰํ޲ʹอͪ·͢ɻ 9 importจͷॏཁੑ ͲͷϑΥϧμʹґଘ͍ͯ͠Δ͔ʁ 9

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υϝΠϯ ͲͷυϝΠϯ͕ͲͷυϝΠϯΛ஌͍ͬͯΔ͔ ϨΠϠʔ ٯࢀর͸ආ͚ͯɺґଘؔ܎ΛҰํ޲ʹอͪ·͢ɻ 10 importจͷॏཁੑ ͲͷϑΥϧμʹґଘ͍ͯ͠Δ͔ʁ 10 YOUTRUSTΞϓϦͷߏ଄ɺ๫࿐ͯ͠Έͨ more infoʁ https://speakerdeck.com/daiki1003/youtrustapurifalsegou-zao-bao-lu-sitemita

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υϝΠϯ ͲͷυϝΠϯ͕ͲͷυϝΠϯΛ஌͍ͬͯΔ͔ ϨΠϠʔ ٯࢀর͸ආ͚ͯɺґଘؔ܎ΛҰํ޲ʹ 11 importจͷॏཁੑ ͲͷϑΥϧμʹґଘ͍ͯ͠Δ͔ʁ 11

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υϝΠϯ ͲͷυϝΠϯ͕ͲͷυϝΠϯΛ஌͍ͬͯΔ͔ ϨΠϠʔ ٯࢀর͸ආ͚ͯɺґଘؔ܎ΛҰํ޲ʹ 12 importจͷॏཁੑ ͲͷϑΥϧμʹґଘ͍ͯ͠Δ͔ʁ 12 Flutter੡YOUTRUSTΞϓϦΛࢧ͑ΔϨΠϠʔߏ੒ more infoʁ https://tech.youtrust.co.jp/entry/app-layer-flutter

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໨࣍ ɾBarrel Fileͱ͸ʁ ɾimport͸ॏཁͳͷ͔ʁ ɾexportΩʔϫʔυ ɾBarrel Fileͷ࡞Γํ 13 13

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DartϥΠϒϥϦͷҰ෦Λɺ ଞͷϥΠϒϥϦʹެ։͢ΔͨΊʹ࢖༻͢Δ 14 exportΩʔϫʔυ exportΩʔϫʔυͱ͸ʁ 14

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໨࣍ ɾBarrel Fileͱ͸ʁ ɾimport͸ॏཁͳͷ͔ʁ ɾexportΩʔϫʔυ ɾBarrel Fileͷ࡞Γํ 15 15

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16 Barrel Fileͷ࡞Γํ 16 lib/comic ᵓᴷᴷ model ɹ ᵓᴷᴷ attack_on_titan.dart ɹ ᵓᴷᴷ hunter_hunter.dart ɹ ᵓᴷᴷ kingdom.dart ɹ ᵋᴷᴷ one_piece.dart

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17 Barrel Fileͷ࡞Γํ 17 lib/comic ᵓᴷᴷ model ᴹ ᵓᴷᴷ attack_on_titan.dart ᴹ ᵓᴷᴷ hunter_hunter.dart ᴹ ᵓᴷᴷ kingdom.dart ᴹ ᵋᴷᴷ one_piece.dart ᵋᴷᴷ model.dart

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18 Barrel Fileͷ࡞Γํ 18 Before After

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19 Barrel Fileͷ࡞Γํ 19 શ෦ख࡞Γʁ

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20 Barrel Fileͷ࡞Γํ 20 શ෦ख࡞Γʁ εΫϦϓτͷར༻ Dart Barrel File Generator

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21 importจͷॏཁੑ ୹͍/গͳ͍͕ਖ਼ٛͰ͸ͳ͍ 21

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lib.dartʁ 22 importจͷॏཁੑ ୹͍/গͳ͍͕ਖ਼ٛͰ͸ͳ͍ 22

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23 ·ͱΊ Barrel FileΛ࢖͏͜ͱͰimportΛߏ଄Խग़དྷΔ 23 importจ͸ͲͷϑΝΠϧ͕ͲͷϑΝΠϧʹґଘ͍ͯ͠Δ͔Λ஌ΔࢦඪͰ͋Δ ༻๏ɾཁྖΛकͬͯਖ਼͓͘͠࢖͍͍ͩ͘͞

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24 24 ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ